Centrifugal cream-separator.



W. P. BARCLAY.

GENTRIFUGAL 01mm SBPARATOB. APPLICATION FILED JULY 29, 1909. 1,020,248.,Patented Mar. 12 1912.

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WILLIAM PARIS BARCLAY, OF CHICAGO, ILLINOIS.

CENTRIFUGAL CREAM-SEPARATOR.

Specification of Letters Patent.

Application filed July 29, 1909.

Patented Mar. 12, 1912.

Serial No. 510,314.

To all whom "it may concern:

Be it known that I, \Vnaaan PARIS Ban- CLAY, a citizen of the UnitedStates, residing at Chicago, in the county of Cook and State ofIllinois, have invented certain new and useful Improvements inCentrifugal Creaiii-Separators.

This invention relates to cream separators, in which the centrifugalforce given to the milk contained within a revolving vessel is used as ameans to force apart the heavier and lighter constituents of the milk sothat the cream separates from the milk more expeditiously than under anatu'al process, and the said invention consists in a novel arrangementof a centrifugal bowl and other parts that will be described hereafter.I attain these objects by the mechanism illustrated in the accompanyingdrawings, in which Figure 1, shows an elevation of the apparatus, thecentrifugal bowl and its casing being shown in section. Fig. 2, shows anupper plan view, and Fig. 3 a lower plan view of the apparatus.

Similar letters refer to similar parts throughout the several views.

The base I), supports the superstructure of the apparatus, and the saidbase is preferably made an iron -asting to give rigidity and strength tothe parts attached thereto. The casing c, rests upon the base I), and isheld rigid to the said base by the cover (Z being clamped to the base.7), by the bolts 6. The cei'itrifugal bowl F, is virtually formed witha lower chamber 1 and an upper chamher 2, and the centrifugal bowlconsists of an exterior perforated shell f, with an intermediate and aninner perforated shell, each shell centrally positioned so as to revolveconcentrically with the tubular spindle f, of the bowl F. Theintermediate perforated shell f, and the inner perforated shell f, attheir lower ends join with the intermediate annular base f that alsocarries and supports the outer perforated shell f at a distance from itslower end. The capplate f, projecting from the tubular spindle f, formsa head to the inner perforated shell f, so that the chambers 2 and 3have a partition or a dividing head separating the said chambers. Thetubular spindle f, is further provided with propulsion vanes f, that arecovered by a cap-plate j, which prevents the milk ascending to the upperchamber 2 from the lower chamber 1, of

the centrifugal bowl, except by way of the outer circlunfcrencc of thecap-plate The milk supply pipe 1L, rigidly connects with the tubularspindle f" of the centrifugal bowl; and the pulley 2', is firmlyattached to the said pipe IL, for rope transmission from the drivepulley j, which is operated through a pinion gear k, meshing with asimilar but larger gear Zr, that is given a revolving moven'icnt whenthe lever 0, is caused to revolve. The pedestal 7), forms a frame forthe gear wheels 7e, 7e, and also a stand for the fountain pail q.Situated at the upper end thereof and within the casing w, and alsoimmediately above the perforated shells f, 7, and f", and formingcommunication therewith, is a conical discharge hood 1', that forms achamber 3 above the centrifugalv bowl F, so that the cream in its ascentfrom and between the perforated shells f, f, and f, will collect in thesaid chamber 3, previous to its discharge from the spout 1', into aconvenient receptacle.

The discharge spent 0, formed on the casing 0, is for conveying the skimmilk located between the casing c, and the exterior perforated shell f,to a convenient receptacle, and the relative positions of the creamspout 1", to the skim milk discharge spout c, as shown in Fig. 1, can beadjusted to have said spouts conveniently close to each other.

The small apertures of the perforated shells f, f, and 7, through whichthe milk is forced during the separation of the cream from the skimmilk, are represented by the parallel and dotted lines .9, s, the saidapertures not necessarily being confined to any definite shape.

The small centrifugal air blower G, is rigidly secured to the base 7),and the said blower is provided with a spindle g, which is secured tothe lower end of the tubular spindle f, of the centrifugal bowl, and thespindle g of the centrifugal blower is provided with vanes g that propelor force air from the said blower G into chamber 1, of the centrifugalbowl F, by way of the discharge pipe 9, and the discharge valve y, ofthe centrifugal blower. The spindle g, and the vanes g of thecentrifugal blower revolve with the spindle of the centrifugal bowl F.

Having described the several parts of the apparatus, the operation ofthe same is as follows :The fountain pail 9, having a supply of milk,and the bowl F of the cream separator being set in motion by the actionof force revolving the lever 0, to turn the gear wheels it", 70, meshingwith each other, so that the drive pulley j, through the trans missionrope t will transmit a revolving motion to the small rope pulley 2',attached to the central milk supply pipe h, connected to the tubularspindle f, of the centrifugal bowl F, causes the said bowl F to revolveat a high velocity; and the milk from the fountain pail g, passing downthe milk supply pipe it, and through apertures '22, at the lower end ofthe tubular spindle f into chamber 1, of the centrifugal bowl F, isgiven a high centrifugal velocity by the revolving motion of the vanes fforming part of the centrifugal bowl; and the milk pressing outward bythe action of centrifugal force, and against the lowerportion of theexterior perforated shell f, of the centrifugal bowl, is separated of aportion of its heavier milk constituent by passing through the aperturess, of the perforated shell f, into the receptacle between the casing 0,and the exterior perforated shell f; and a certain amount of the heaviermilk constituent with the cream escapes around the circumferential edgeof the cap-plate f into chamber 2, of the centrifugal bowl F, and aseparation of the remaining heavier milk constituent from the creamtakes place, through centrifugal action forcing the heavier milkconstituent through apertures s, in the perforated shells f, and f, intothe skim milk receptacle between the exterior perforated shell f and thecasing 0. The skim milk leaving the said receptacle by way of the spoutc, int-o a convenient vessel, and the cream ascending into chamher 8,formed by the hood r, escapes by way of the spout 1 into a convenientvessel. The function of the blower G, is to force air into chamber 1 ofthe centrifugal bowl, so as to mix with the milk and assist theseparation of the cream from the heavier milk constituent by the forcedascent of the air through the milk in the centrifugal bowl, so thatduring the time that a high centrifugal force is throwing the heavierpart of the milk outward and forcing it through the apertures s, s, ofthe perforated shells f, f and f, the buoyancy of the air from thecentrifugal blower G, materially assists the separation of the creamfrom the heavier milk constituent in its ascent through the milk andthrough the centrifugal bowl, prior to its escape with the cream throughthe cream spout r.

What I claim as new and desire to secure by Letters-Patent is 1. In acream separator the combination within a casing of a centrifugal bowl divided into a lower and an upper chamber, and provided with a tubularspindle formed with propulsion vanes, a cap plate covering thepropulsion vanes, an intermediate annular base supporting anintermediate and an inner perforated shell, an upper dividing headformed with the tubular spindle, and a hood above the upper dividinghead forming a cream chamber, substantially as shown and described.

2. The combination with a cream separator of a small centrifugal airblower with an extended spindle connecting directly to a centrifugalbowl spindle, and the discharge pipe of the air blower connected toforce air into the centrifugal bowl to assist in the separation of thecream from the milk in its ascent through the centrifugal bowl.

3. In a centrifugal cream separator the combination of a smallcentrifugal air blower with a spindle extended from the cream separatorbowl, an air discharge pipe with an air valve suitably connected betweenthe air blower and the interior of the centrifugal bowl, so that airwill be admitted to the centrifugal bowl to assist in the separation ofthe cream from the milk, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

WILLIAM PARis BARCLAY.

WVitnesses PETER DOUGLAS, JAMES ScULLY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

